It’s a positive development for Obamacare, the law formally known as the Affordable Care Act, at a time when the future stability of the law remains uncertain. On August 15, the insurer Centene stepped in and covered 14 rural Nevada counties that had previously not had insurers for 2018.

Larry Levitt, a senior vice president at the Kaiser Family Foundation, a nonpartisan health-policy think tank, tweeted out a timelapse of how the number of counties that were at risk of not having insurance plans on the marketplace in 2018 has changed over time.

Health insurers have until late September to finalise their coverage areas.